Hi Minggo Zhang: Walzer helped me to make it work. But I still don’t know what was the problem. since he sent me back the project after the modification, I run it on my kindler fire, it works. then I copied to Classes and Resources directories into my own project, the problem is still there (touch the screen and the app exit) .
So I just use the project Walzer sent to me and modified the configurations files to match my development env, then compiled the project and run it , the app seems like ok.
I still don’t know what is wrong with my project.